<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			/* font- text- line- color */
			div {
				color: orange;
				font-size: 30px;
				width: 300px;
			}
		</style>
	</head>
	<body>
		<div>
			<span>css继承性</span>
		</div>
	</body>
</html>
